JP3029568B2 - Coil bobbin - Google Patents
Coil bobbinInfo
- Publication number
- JP3029568B2 JP3029568B2 JP08087220A JP8722096A JP3029568B2 JP 3029568 B2 JP3029568 B2 JP 3029568B2 JP 08087220 A JP08087220 A JP 08087220A JP 8722096 A JP8722096 A JP 8722096A JP 3029568 B2 JP3029568 B2 JP 3029568B2
- Authority
- JP
- Japan
- Prior art keywords
- coil
- conductive wire
- bobbin
- guide groove
- conductor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Electromagnets (AREA)
- Magnetically Actuated Valves (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ソレノイドのコイ
ルボビンに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solenoid coil bobbin.
【０００２】[0002]
【従来の技術】電磁センサや、継電器あるいは電磁弁な
どに用いるソレノイドのボビンは、コイル導線の始端を
ターミナルへ案内し、かつ乱巻きを防止するために、導
線の始端部の位置を規定するための案内溝がフランジに
設けられている。この案内溝は、フランジの軸線方向の
内面に、単純な凹溝を径方向に延設したものが一般的で
ある。2. Description of the Related Art A bobbin of a solenoid used for an electromagnetic sensor, a relay or an electromagnetic valve is used to guide the beginning of a coil conductor to a terminal and to define the position of the beginning of the conductor in order to prevent turbulence. Are provided in the flange. This guide groove is generally formed by extending a simple concave groove in the radial direction on the inner surface of the flange in the axial direction.
【０００３】[0003]
【発明が解決しようとする課題】一方、ボビンの巻軸に
巻回されたコイルの周囲に合成樹脂材をモールド成形し
たものに於いては、樹脂材の成形圧力がコイルに加わっ
て巻線部分が軸方向へ押圧されるが、上記の如き従来の
構成によると、この押圧力により導線の始端部に巻線部
分が押し付けられ、導線に作用する応力が過大になるお
それがあった。On the other hand, in a case where a synthetic resin material is molded around a coil wound around a bobbin winding shaft, the molding pressure of the resin material is applied to the coil to form a coil portion. Is pressed in the axial direction. However, according to the above-described conventional configuration, the pressing force presses the winding portion against the starting end of the conductive wire, and there is a possibility that the stress acting on the conductive wire becomes excessive.
【０００４】本発明は、このような不都合を解消するべ
く、コイルをインサートモールドすることによるストレ
スが、導線のターミナルへ向けて導出された部分に加わ
り難くなるように改良されたコイルボビンを提供するこ
とを目的とするものである。An object of the present invention is to provide an improved coil bobbin in which the stress caused by insert-molding the coil is less likely to be applied to a portion of the lead wire directed toward the terminal in order to eliminate such inconvenience. It is intended for.
【０００５】[0005]
【課題を解決するための手段】このような目的を果たす
ために、本発明に於いては、巻軸とフランジとを有し、
巻軸に巻回された導線の周囲に合成樹脂材がモールド成
形されるコイルボビンの構成を、その底面が、外周側へ
行くに従って徐々に深くなると共に導線の巻き方向につ
いて徐々に浅くなるようにされ、かつその軸線方向から
見た形状が巻軸の外周に頂点が接する扇形をなす案内溝
をフランジの内側面に形成し、該案内溝の最も深い部分
に導線の始端部を沿わせるものとした。In order to achieve such an object, the present invention has a winding shaft and a flange,
A synthetic resin material is molded around the conductor wound around the reel.
The configuration of the coil bobbin to be formed is such that the bottom surface is gradually deepened toward the outer peripheral side and gradually reduced in the winding direction of the conductor, and the shape viewed from the axial direction is apex at the outer periphery of the winding shaft. A guide groove in the shape of a fan contacting the guide groove is formed on the inner surface of the flange, and the leading end of the conductive wire extends along the deepest portion of the guide groove.
【０００６】[0006]
【発明の実施の形態】以下に添付の図面を参照して本発
明の構成を詳細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below in detail with reference to the accompanying drawings.
【０００７】図１は、本発明が適用された電磁センサを
示している。この電磁センサ１は、後述する感応素子部
２の周囲を被覆したハウジング部３と、車体に対する取
付ステー部４と、ケーブル引出部５とを合成樹脂材にて
一体成形してなっている。なお、取付ステー部４には、
ボルト締付力を受けるための金属製カラー６がインサー
トされている。FIG. 1 shows an electromagnetic sensor to which the present invention is applied. In the electromagnetic sensor 1, a housing part 3 covering the periphery of a sensitive element part 2, which will be described later, a mounting stay part 4 for a vehicle body, and a cable lead-out part 5 are integrally formed of a synthetic resin material. In addition, the mounting stay part 4 includes
A metal collar 6 for receiving a bolt tightening force is inserted.
【０００８】感応素子部２は、図２及び図３に示すよう
に、合成樹脂材にて射出成形されたボビン７と、該ボビ
ン７の軸線方向一端面に圧入固定された一対のターミナ
ル部材８のそれぞれに各端を連結された上でボビン７に
巻回された導線からなるコイル９と、ボビン７の中心孔
に装着されたポールピース１０、永久磁石１１、及びヨ
ーク１２と、車両の制御回路にコネクタ（図示せず）を
介して接続されるリード線１３とからなっている。As shown in FIGS. 2 and 3, the sensitive element portion 2 comprises a bobbin 7 injection-molded from a synthetic resin material, and a pair of terminal members 8 press-fitted and fixed to one end surface of the bobbin 7 in the axial direction. , A coil 9 composed of a conductive wire wound around a bobbin 7 with each end connected thereto, a pole piece 10, a permanent magnet 11, and a yoke 12 mounted in a center hole of the bobbin 7, and control of a vehicle. And a lead wire 13 connected to the circuit via a connector (not shown).
【０００９】図２に示すように、コイル９の導線１４の
端末は、この端末が絡められたターミナル部材８の導線
保持部１５に電極を当ててかしめながら電流を流すこと
により、導線表面の絶縁層が熱で溶け、導線１４の銅層
とターミナル部材８にメッキされた錫層とが溶融し、導
線保持部１５にヒュージング接合されている。As shown in FIG. 2, the terminal of the conductor 14 of the coil 9 is electrically connected to the conductor holding portion 15 of the terminal member 8 where the terminal is entangled, and an electric current is caused to flow while crimping the electrode. The layer is melted by heat, and the copper layer of the conductor 14 and the tin layer plated on the terminal member 8 are melted and fused to the conductor holding part 15.
【００１０】またリード線１３は、ターミナル部材８の
リード線保持部１６に電極を当ててかしめながら電流を
流すことにより、リード線１３の心線の銅層とターミナ
ル部材８にメッキされた錫層とが溶融し、かつリード線
１３の心線の端末に予め施されている半田が接合部全体
に溶け込み、リード線保持部１６に強固に接合されてい
る。なお、半田は高温半田が使用される。The lead wire 13 is formed by applying an electric current to the lead holding portion 16 of the terminal member 8 by applying an electrode thereto and crimping the lead wire 13 to form a copper layer of the core wire of the lead wire 13 and a tin layer plated on the terminal member 8. Are melted, and the solder previously applied to the ends of the core wires of the lead wires 13 has melted into the entire joint portion, and is firmly joined to the lead wire holding portion 16. Note that high-temperature solder is used as the solder.
【００１１】そしてボビン７の一端面に形成されている
保持溝１７に各リード線１３をそれぞれ軽圧入すること
により、リード線１３のずれ止めがなされる。なお、リ
ード線１３の被覆には、図３に示すように、ケーブル押
さえ１８が予めモールド成形されている。Each lead wire 13 is lightly press-fitted into a holding groove 17 formed on one end surface of the bobbin 7, thereby preventing the lead wire 13 from shifting. Note that, as shown in FIG. 3, a cable retainer 18 is molded in advance on the covering of the lead wire 13.
【００１２】このように組み立てられた感応素子部２と
金属製カラー６とを、図３に示したように下型１９内に
セットした後に上型２０を閉じ、感応素子部２の外面と
下型１９の内面間に形成されたキャビティにゲート２１
から溶融樹脂を射出することにより、図４に示したよう
に、感応素子部２及びカラー６をインサートした状態で
ハウジング部３及びステー部４が一体成形される。After setting the thus-assembled sensitive element portion 2 and metal collar 6 in the lower mold 19 as shown in FIG. 3, the upper mold 20 is closed, and the outer surface of the sensitive element portion 2 and the lower surface are closed. The gate 21 is inserted into the cavity formed between the inner surfaces of the mold 19.
As shown in FIG. 4, the housing portion 3 and the stay portion 4 are integrally molded with the sensitive element portion 2 and the collar 6 being inserted by injecting the molten resin.
【００１３】さて、上述の如くコイル９の周囲を合成樹
脂材にてモールド成形したものに於いては、樹脂材の成
形圧力がコイル９に加わるが、この押圧力が導線１４の
始端部に加わると、導線１４に作用する応力が過大にな
り、場合によっては、導線１４をターミナル部材８の導
線保持部１５へ向けて導出する部分（始端部）が損傷す
るおそれがあった。そこで本発明に於いては、図５に示
したように、ボビン７のフランジ７ａの内側面に、導線
１４の始端部を案内するための案内溝３１を形成するも
のとした。In the case where the periphery of the coil 9 is molded with a synthetic resin material as described above, the molding pressure of the resin material is applied to the coil 9, and this pressing force is applied to the starting end of the conductive wire 14. Then, the stress acting on the conductor 14 becomes excessively large, and in some cases, the portion (starting end) of the terminal member 8 leading out to the conductor holding portion 15 may be damaged. Therefore, in the present invention, as shown in FIG. 5, a guide groove 31 for guiding the starting end of the conductive wire 14 is formed on the inner surface of the flange 7a of the bobbin 7.
【００１４】この案内溝３１は、その軸線方向から見た
形状が、ボビン７の巻軸７ｂの外周に頂点が接する扇形
をなしており、その底面は、外周側へ行くに従って徐々
に深くなると共に、導線１４の巻き方向について徐々に
浅くなるようにされている。そして導線１４の始端部を
この案内溝３１の最も深い部分に沿わせた上でボビン７
の巻軸７ｂに導線１４を巻回してコイル９を構成するも
のとした。The shape of the guide groove 31 as viewed from the axial direction is a fan shape whose apex is in contact with the outer periphery of the bobbin 7b of the bobbin 7, and the bottom surface gradually becomes deeper toward the outer periphery side. , In the winding direction of the conductive wire 14. The leading end of the conductive wire 14 is aligned with the deepest portion of the guide groove 31 and the bobbin 7
The winding wire 7 is wound around the conductive wire 14 to form the coil 9.
【００１５】これにより、図６に示すように、案内溝３
１の最も深い部分に導線１４を安定的に沿わせることが
できると共に、コイル９の巻線部分の軸方向変位が小さ
くなり、しかも導線１４が案内溝３１の壁３２にて保護
されるので、コイル９をインサートモールドする際の成
形圧力によるストレスが導線１４の始端部に作用し難く
なる。As a result, as shown in FIG.
Since the conductor 14 can stably follow the deepest portion of the coil 1, the axial displacement of the winding portion of the coil 9 is reduced, and the conductor 14 is protected by the wall 32 of the guide groove 31. Stress due to molding pressure when insert-molding the coil 9 is less likely to act on the start end of the conductive wire 14.
【００１６】[0016]
【発明の効果】このように本発明によれば、コイルをイ
ンサートモールドした際の成形圧力が導線の始端部に加
わり難くなるので、同部分の断線に対する信頼性を高め
る上に大きな効果を奏することができる。As described above, according to the present invention, since the molding pressure at the time of insert-molding the coil is less likely to be applied to the starting end of the conductor, there is a great effect in improving the reliability against disconnection of the same. Can be.
【図１】本発明による電磁センサの斜視図。FIG. 1 is a perspective view of an electromagnetic sensor according to the present invention.
【図２】感応素子部並びにカラーを金型内にセットした
状態を示す縦断面図。FIG. 2 is a longitudinal sectional view showing a state where a sensitive element portion and a collar are set in a mold.
【図３】感応素子部の要部斜視図。FIG. 3 is a perspective view of a main part of a sensitive element unit.
【図４】感応素子部並びにカラーを金型内でモールド成
形した状態を示す縦断面図。FIG. 4 is a longitudinal sectional view showing a state in which a sensitive element portion and a collar are molded in a mold.
【図５】ボビンのフランジ部の内側面を示す部分的な斜
視図。FIG. 5 is a partial perspective view showing the inner surface of the flange portion of the bobbin.
【図６】案内溝と導線との関係を概念的に示す図５に於
けるVI−VI線に沿う部分的な断面図。FIG. 6 is a partial cross-sectional view taken along the line VI-VI in FIG. 5, conceptually showing the relationship between the guide groove and the conductive wire.
１ 電磁センサ ２ 感応素子部 ３ ハウジング部 ４ 取付ステー部 ５ ケーブル引出部 ６ 金属製カラー ７ ボビン ８ ターミナル部材 ９ コイル １０ ポールピース １１ 永久磁石 １２ ヨーク １３ リード線 １４ 導線 １５ 導線保持部 １６ リード線保持部 １７ 保持溝 １８ ケーブル押さえ １９ 下型 ２０ 上型 ２１ ゲート ３１ 案内溝 ３２ 壁 DESCRIPTION OF SYMBOLS 1 Electromagnetic sensor 2 Sensitive element part 3 Housing part 4 Mounting stay part 5 Cable lead-out part 6 Metal collar 7 Bobbin 8 Terminal member 9 Coil 10 Pole piece 11 Permanent magnet 12 Yoke 13 Lead wire 14 Lead wire 15 Lead wire holding part 16 Lead wire holding Part 17 Holding groove 18 Cable holder 19 Lower mold 20 Upper mold 21 Gate 31 Guide groove 32 Wall
フロントページの続き (56)参考文献 特開 平８−17654（ＪＰ，Ａ) 実開 平５−38813（ＪＰ，Ｕ) 実開 平４−15803（ＪＰ，Ｕ) 実開 昭58−22702（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01F 5/02 H01F 7/06 H01F 27/28 - 27/32 Continuation of the front page (56) References JP-A-8-17654 (JP, A) JP-A-5-38813 (JP, U) JP-A-4-15803 (JP, U) JP-A-58-22702 (JP) , U) (58) Fields surveyed (Int.Cl. 7 , DB name) H01F 5/02 H01F 7/06 H01F 27/28-27/32
Claims (1)
れた導線の周囲に合成樹脂材がモールド成形されるコイ
ルボビンであって、 その底面が、外周側へ行くに従って徐々に深くなると共
に前記導線の巻き方向について徐々に浅くなるようにさ
れ、かつその軸線方向から見た形状が前記巻軸の外周に
頂点が接する扇形をなす案内溝を前記フランジの内側面
に形成し、 該案内溝の最も深い部分に、前記導線の始端部を沿わせ
るものとしたことを特徴とするコイルボビン。And a winding shaft wound around the winding shaft.
A coil bobbin in which a synthetic resin material is molded around a conductive wire , the bottom surface of which is gradually deeper toward the outer peripheral side and gradually shallower in the winding direction of the conductive wire. A guide groove is formed on the inner surface of the flange, and has a fan-shaped shape whose vertex is in contact with the outer periphery of the winding shaft when viewed from the axial direction, and the start end of the conductive wire is formed at the deepest portion of the guide groove. A coil bobbin characterized by being made to follow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08087220A JP3029568B2 (en) | 1996-03-14 | 1996-03-14 | Coil bobbin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08087220A JP3029568B2 (en) | 1996-03-14 | 1996-03-14 | Coil bobbin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09251913A JPH09251913A (en) | 1997-09-22 |
| JP3029568B2 true JP3029568B2 (en) | 2000-04-04 |
Family
ID=13908827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP08087220A Expired - Fee Related JP3029568B2 (en) | 1996-03-14 | 1996-03-14 | Coil bobbin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3029568B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4981587B2 (en) * | 2007-08-29 | 2012-07-25 | スミダコーポレーション株式会社 | Coil bobbin |
-
1996
- 1996-03-14 JP JP08087220A patent/JP3029568B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09251913A (en) | 1997-09-22 |
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